Computer Networking
A protocol is a set of rules governing a time sequence of events that must take place

between modems
between an interface
None of these
between peers
across an interface

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Computer Networking
You want to create a standard access list that denies the subnet of the following host: 172.16.144.17/21. Which of the following would you start your list with?

access-list 10 deny 172.16.144.0 0.0.7.255
access-list 10 deny 172.16.136.0 0.0.15.255
access-list 10 deny 172.16.48.0 255.255.240.0
access-list 10 deny 172.16.64.0 0.0.31.255

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Computer Networking
The network layer, in reference to the OSI model, provide

the virtual circuit interface to packet-switched service
the interface between the X.25 network and packet mode device
None of these
data link procedures that provide for the exchange of data via frames that can be sent and received
All of these

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Computer Networking
A WATS arrangement

None of these
is always less expensive than flat-rate service
is less expensive than flat-rate service only when the number of calls is small and the duration of each is long
is less expensive than flat-rate service only when the number of calls is large and the duration of each is short
is never less expensive than flat-rate service

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